D-Link DSL-504 User Manual - page 21
DSL-504 ADSL Router User’s Guide
Leased Time
The specified amount of time (in seconds) a client can lease an IP address, from
the dynamically allocated IP pool. A value of 4123456789 means the lease is
permanent.
DNS Server IP
Domain Name Service (DNS) servers are used on the Internet to match the
Uniform Resource Locator (URL) for a website to its Internet IP address. For
example, the URL: www.cnn.com, is a pseudonym for the IP address:
207.25.71.25. DNS entries allow users to access resources using URLs instead of
IP addresses.
You may enter any Internet DNS server IP address available through the WAN
connection. Your ISP should provide this address. (Note that without a DNS
server IP, internet sites will only be available using IP addresses and will not be
available using URLs).
Domain Name
You can use this field to define a domain name to be used inside your network.
This is not used outside the LAN. Hosts linked to the Router within the LAN only
see it.
State
This toggle Disable and Enable for DHCP function.
NAT Configuration
NAT Configuration Window
Network Address Translation (NAT) is a routing protocol that allows your
network to become a private network that is isolated from, yet connected to the
Internet. It does this by changing the IP address of packets from a global IP
address usable on the Internet to a local IP address usable on your private
15